code: def test_map_polygon(self):
      g = geojson.Polygon(
          [
              [
                  (3.78, 9.28),
                  (-130.91, 1.52),
                  (35.12, 72.234),
                  (3.78, 9.28),
              ],
          ]
      )
      result = map_coords(lambda x: x, g)
      self.assertEqual(result["type"], "Polygon")
      self.assertEqual(result["coordinates"][0][0], (3.78, 9.28))
      self.assertEqual(result["coordinates"][0][-1], (3.78, 9.28))
  
file_path: geojson/tests/test_coords.py
imports: import unittest
  import geojson
  from geojson.utils import coords, map_coords
label_desc: Use image node_id 10 for calling the CoordsTestCase obj's underlying member method code with example usage: obj.test_map_polygon() without return types